Morihei Ueshiba (O'Sensei) (1883-1969), founder of Aikido
O'Sensei and Morihiro Saito Sensei (1928-2002), (founder with student of 23 years)
Morihiro Saito Sensei and Michael Field Sensei (1947-2018)(sensei and student of 24 years)
Michael Field Sensei and Peter Sceney (sensei and student of 29 years)